Nutrimuscle Forum : Mobile & Tablette

Les vitamines E et C préservent l'immunité du sportif

Actualités sport, fitness & musculation, vidéos des pros, études scientifiques. Discutez avec la communauté Nutrimuscle et partagez votre expérience...

Modérateurs: Nutrimuscle-Conseils, Nutrimuscle-Diététique

Les vitamines E et C préservent l'immunité du sportif

Messagepar Nutrimuscle-Conseils » 29 Jan 2013 01:59

Prevention of Neutrophil Protein Oxidation With Vitamins C and E Diet Supplementation Without Affecting the Adaptive Response to Exercise
IJSNEM Volume 23, Issue 1, February 2013, 23, 31 – 39


The authors studied the effects of antioxidant diet supplementation with an almond-based beverage on neutrophil antioxidants, nitrite, and protein oxidative alterations after exercise. Fourteen trained male amateur runners were randomly assigned in a double-blind fashion to receive antioxidant supplementation (152 mg/d vitamin C and 50 mg/d vitamin E) or placebo using an almond-based beverage for 1 mo and participated in a half-marathon race. Blood samples were taken before and after the half-marathon and after 3 hr recovery. Supplementation significantly increased basal neutrophil vitamin C compared with placebo (p < .05). Exercise increased neutrophil vitamin E levels in the supplemented group and decreased vitamin C in both groups after recovery (p < .05). Neutrophil catalase and glutathione peroxidase gene expression and nitrite levels were significantly increased as result of exercise (p < .05). Nitrotyrosine and protein carbonyl derivates increased only in the placebo group after exercise (p < .05), and these values remained high at recovery. No significant differences were evidenced in caspase-3 activity and DNA damage. Antioxidant supplementation with vitamins C and E reduced the exercise-induced oxidation of proteins in neutrophils, without altering the antioxidant adaptive response, as evidenced by the increased catalase and glutathione peroxidase gene expression.
Avatar de l’utilisateur
Nutrimuscle-Conseils
Forum Admin
 
Messages: 38804
Inscription: 11 Sep 2008 19:11

Messagepar MZA » 30 Jan 2013 09:36

As-tu une / plusieurs étude(s) dans le même sens, qui montre le bénéfice d'une supplémentation à 500mg en Vit C voir au dessus ?
Avatar de l’utilisateur
MZA
 
Messages: 534
Inscription: 5 Avr 2012 16:02
Localisation: Tatooine


Retourner vers Actualités, vidéos, études scientifiques

Qui est en ligne

Utilisateurs parcourant ce forum: Bing [Bot] et 3 invités